Cranks & Bottom Brackets

da Vinci Designs Direct Drive

American Made Billet Machined Cranks (150mm to 200mm + 3 hole cranks) *** New Option – Cerakoted Black *** Click on the photo for a larger size

430 grams – Impressively Stiff – Replaceable / Interchangeable Spider – Square Taper Interface, this old standard is hard to beat, reliable, allows you to use different width bottom brackets to adjust chainline and you have many brands of serviceable bottom brackets to choose from. – Low Profile Bottom Bracket Spindle

Low 158mm Outside to Outside Q-Factor (w/103mm BB)
NEW Lengths Available – 150mm – 155mm -160mm – 162.5mm – 165mm – 167.5mm – 170mm – 172.5mm – 175mm – 180mm – 200mm – (130/150/170mm) or (120/140/160mm) Triple Hole Child/Full-size-person Cranks
Spiders Available
– Four Arm 104mm – 64mm
– Standard (or compact) 110mm – 74mm
– Special 110mm – 58mm for those that want to run a chainring smaller than 24 tooth
– Road 130mm (with 74mm triple option)
– 34 tooth Spider/Chainring. This is a replaceable one piece spider/34 tooth chainring. It is lighter, less expensive (no need to buy chainrings and chainring bolts) and perfectly concentric.

Retail Prices Single Bike or Tandem Front – $259 Any length*/Spider combination w/o triple hardware For triple chainrings you will need inner chainrings bolts and spacers. *200mm Single Bike or Tandem Front $289 – your choice of spider
Tandem Rear – $299 Any length*/Spider combinations. NEW lower price
– Add $25 pair for Black Cerakote
There are simply too many combinations to make the cranks available online with confidence we have them in stock.
To order cranks, please call or email us.

Bottom Bracket

ChroMo Spindle – 215g
Titanium Spindle – 160g

High quality JIS square taper bottom brackets with sealed bearings, and aluminum cups. ChroMo BB’s have an aluminum sleeve instead of the carbon fiber as shown.

Available in 103mm, 107mm, 110mm, 113mm, 118mm – For 68mm shell

Self Extracting Cranks Bolts for square taper bottom brackets (8mm)

Child Kit $400.

Includes our three hole cranks from above (130/150/170mm or 120/140/160mm), sliding bottom bracket, spindle, your choice of spider, chain, and hardware. (This is all you need for a da Vinci tandem. A conventional tandem will require a second chainring, long chainrings bolts and spacers between the two left rear chainrings

Tandem with child stoker kit